MNS may refer to:
Maharashtra Navnirman Sena, Indian political party The Malaysian Nature Society Maki-Nakagawa-Sakata matrix in particle physics Ministry of National Security of several countries Minneapolis, Northfield and Southern Railway, reporting mark Minnesota North Stars, the NHL abbreviation for the franchise now known as the Dallas Stars Mirror neuron system Mission Need Statement MNS antigen system, a variant blood group Monday Night Soccer, an Irish television programme Movement for a New Society National Syndicalists (Portugal), Movimento Nacional-Sindicalista Manganese(II) sulfide, chemical symbol MnS Mansi language, by ISO 639-3 language code